28440922 has 8 divisors (see below), whose sum is σ = 43569216. Its totient is φ = 13917852.

The previous prime is 28440917. The next prime is 28440941. The reversal of 28440922 is 22904482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151188 + ... + 151375.

It is an arithmetic number, because the mean of its divisors is an integer number (5446152).

Almost surely, 2^28440922 is an apocalyptic number.

28440922 is a deficient number, since it is larger than the sum of its proper divisors (15128294).

28440922 is a wasteful number, since it uses less digits than its factorization.

28440922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302612.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28440922 is about 5333.0030939425. The cubic root of 28440922 is about 305.2445302264.

The spelling of 28440922 in words is "twenty-eight million, four hundred forty thousand, nine hundred twenty-two".